Analysis of common faults of asphalt concrete mixing plant

Analysis of common faults of asphalt concrete mixing plant

1, on hot-cold feed equipment failure analysis

Regardless of is speed belt motor also is cold material belt under was things card live, will on variable speed belt machine occurred downtime produced effect, if variable speed belt machine circuit appeared fault, will on frequency device for detailed of check, view its whether can run normal, if no appeared short-circuit, will on belt for check, see its whether run partial, skid, if is belt of problem, will timely of on its for reasonable of adjustment, guarantee function of normal run.

2, the Blender problems

Mixer problem main performance in construction in the appeared exception noise, then on need we first consider is because mixer load overweight led to motor bracket of not stable, another a situation will consider is up fixed role of bearing may was damaged, this on requirements job personnel for all view, and do bearing of renovation job, and on occurred serious damaged of mixer parts timely of for replaced, prevent mix material appeared not uniform of surface.

3, on the analysis of the problems

Sensor problems there are two cases, in one case under the silo is not precise, it is necessary to view the sensor if sensor fails to replace them in time; Alternatively beams stuck cause problems with sensors, and it takes me to foreign body removal.

4, the burner cannot normal ignition and combustion

On burning device in products heating Shi cannot normal for ignition burning of problem, need job personnel adopted following method to solution: first, to on operation room and the the burning of device for full check, as drive with, and power, and drum and wind machine, parts power for detailed of view, then on wind machine of burning valve azimuth for view, view cold door of status, wind machine door of switch status, and dry drum of status and internal pressure situation, and instrument is has in manual block state, in all of index are qualified of State Xia , Into second step of view: view oil is dredge, and burning of device is normal, high pressure package is damaged, if also cannot troubleshooting problem, on into to third a process, put burning device electrode device out to, view its clean situation, including is was oil block oil and electrode between is has useful distance, two a main aspects, if above view are is normal, so on need on fuel pump of job status for detailed of view, and test pump mouth of pressure is meet normal status.

5, analysis of negative pressure abnormal

On influence factors of internal pressure blower includes two aspects: blowers and induced draft fan. Blower in positive pressure in the drum phenomenon of fan the opportunity to cause negative pressure in the drum, and the resulting negative pressure not great, otherwise it will keep the dust fly out from the sides of the drum affecting the surrounding environment,

When the negative pressure in the drum, and staff should proceed as follows: first, in order to determine the throttle performance, it is necessary to strictly check the air inlet of the fan. In the case of air damper moves to set it to manual operation, and adjust the handwheel lookout site, see if its running, its been stuck to exclude, if manually to open, and then follow the procedures for a detailed investigation. Second, the fan damper under the condition of normal use, need staff checks the pulse Board in detail, check the wiring or solenoid switch there is no doubt, find the cause of the accident and scientific solutions in a timely manner.

6, stone than the right study

Asphalt-stone ratio refers to the asphalt concrete asphalt and sand fill the feeding of mass ratio, as indicators of the quality control of asphalt concrete is very important. If asphalt-stone ratio is too large will cause pavement rolled "pancakes". But if the stone is too small, it will cause divergence in the concrete material, rolling does not form, both of these conditions are serious quality accidents.

7, sieve analysis

Screen problem is a mesh of holes appear, this could result in a shift of aggregates to the next in a silo for the document, and the mixture of sample extraction and screening to see if mixture sticks, in paving the road rolled pancakes will occur. So, if every once in a while or abnormal on the screening data extraction and having to think about for screen viewing.